RDMA/irdma: Prevent rereg_mr for non-mem regions
In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Prevent rereg_mr for non-mem regions When a QP/CQ/SRQ is created, a two step process is used where the buffer is allocated in userspace and explicitly registered with the normal reg_mr mechanism prior to creating the actual QP/CQ/SRQ object. These special registrations are indicated via an ABI field so the driver knows that they do not have a valid mkey and to skip the actual CQP command submission. Since these are real MR objects from the core's perspective, it is possible for a user application to invoke rereg_mr on them and cause a real CQP op to be emitted with the zero-initialized mkey value of 0. Fix this by preventing rereg_mr on these special regions.
CVE-2026-68419
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-68419
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "715fdb3b30541cc8180b7cdc6aa9f8c307afdf25",
"lessThan": "fb46d134e1b8690bed2da9005b36d32d2efd34ac",
"versionType": "git"
},
{
"status": "affected",
"version": "5ac388db27c443dadfbb0b8b23fa7ccf429d901a",
"lessThan": "b5029e91c63406e4f4c8d58161048b41b6f0bd8c",
"versionType": "git"
},
{
"status": "affected",
"version": "5ac388db27c443dadfbb0b8b23fa7ccf429d901a",
"lessThan": "ca1c29f05274b737dc964e28b97803750d7cf7ec",
"versionType": "git"
},
{
"status": "affected",
"version": "5ac388db27c443dadfbb0b8b23fa7ccf429d901a",
"lessThan": "dbaa37e060918c45517786e37ecab0f300b48fa9",
"versionType": "git"
},
{
"status": "affected",
"version": "5ac388db27c443dadfbb0b8b23fa7ccf429d901a",
"lessThan": "a846aecb931b4d65d5eafa92a0623545af46d4f2",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.120",
"lessThan": "6.6.148",
"versionType": "semver"
}
],
"programFiles": [
"drivers/infiniband/hw/irdma/verbs.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/hw/irdma/verbs.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68419
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41721 · Revision 1
- Added to Heist Feed
- Publisher date